Figure 3.
Effect of M3G on the UVA-induced release of MMP-1 and procollagen Iα1 in HaCaT keratinocytes (A) and HDFs (B). Cells were exposed to UVA radiation (10 J/cm2) and treated with given concentrations of M3G. After 24 h incubation, MMP-1 and pro-collagen Iα1 release in the cell culture media was quantified by ELISA. Retinoic acid was used as a positive control. Values are means ± SD of three independent experiment run in triplicate. * p < 0.05, ** p < 0.01 compared to UVA-irradiated untreated control.